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1 day to 7 weeks

A new individual receives 23 chromosomes from each parent. He or she is truly a unique individual human being, never to be repeated. A new person has been created, who at this stage is a tiny living organism weighing only 15 ten-millionth of a gram. Life begins.

First day of new life: The first cell divides into two, the two into four, and so on. Each of these new cells divides again and again as they travel toward the womb in search of a protected place to grow.

18 days from conception, heart begins to beat, with the baby’s own blood.

28 days from conception a baby has eyes, ears, and even a tongue!

28 days from conception: Muscles are developing along the future spine. Arms and legs are budding.

42 days: Brain waves can be detected, the jaw forms, including teeth and taste buds. The unborn baby begins to swallow amniotic fluid. Fingers and toes are developing.

45 days from conception: The unborn baby is making body movements, a full 12 weeks before the mother may notice such stirrings. By seven weeks the chest and abdomen are fully formed. Swimming with a natural swimmer’s stroke in the amniotic fluid, the baby now looks like a miniature human infant.

44-45 days: Buds of milk teeth appear, and the unborn baby’s facial muscles develop. Eyelids begin to form, protecting the developing eyes. Elbows take shape. Internal organs are present, but immature. 99% of muscles are present, each with its own nerve supply.

10 Weeks: The unborn baby’s body is sensitive to touch. He/she squints, swallows puckers up brow and frowns. Eyelids, fingerprints and even fingernails are evident.

11 weeks

11 Weeks: The unborn now “practices” breathing, since he/she will have to breathe air immediately after birth. Baby urinates, and stomach muscles can now contract. Vocal chords and taste buds form. Facial expressions and even smiles are evident.

12-17 weeks

12 Weeks: Though too small to be felt by the mother, the baby reaches peak frequency of movement during the third month. The baby’s sex can be visually determined, and the child’s eyes, ears and face begin to display distinctive characteristics. He/she can kick, turn feet, curl and fan toes, make a fist, move thumbs, bend wrists, turn head, open mouth and press lips tightly together.

12 Weeks: The unborn baby is now about 3 inches long, weighing approximately 2 ounces. Fine hair begins to grow on his/her upper lip, chin and eyebrows. The baby swallows and responds to skin stimulations.

13 Weeks: The unborn baby is about 3 inches long, weighing approximately 3 ounces. His/her facial expressions may resemble the parents. The baby is active, but baby is too small for mother to feel anything.

14 Weeks from conception: At this age, the heart pumps several quarts of blood through the body every day. The unborn baby’s eyebrows have formed and eye movement can be detected.